Titanium chelate dispersions

A technology of titanium chelate compound and dispersion liquid, applied in the field of composition and its manufacture, can solve the problems such as undisclosed aqueous suspension liquid

Inactive Publication Date: 2006-05-24
DORF KETAL SPECIALITY CATALYSTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them discloses how to stabilize such aqueous suspensions, especially alcohol-free aqueous suspensions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Preparation of Oxybis(2,4-Pentanedionyl-O,O')Titanium Homogen Using a High Shear Mixer 20% slurry of polymer in water

[0033] 428 g of distilled water and 7.5 g of Pluronic L-31 (BASF, ethylene oxide-methyloxirane copolymer) were added to a 2 L beaker. Immerse a Gifford-Wood Model 76-1L mixer in the water and start. In 30 min, 185 g of a 75% solution of titanium diisopropoxybis(2,4-pentanedionyl)titanium in 2-propanol were added in the suction section of the mixing head. Stirring was continued for 15 min.

[0034] Transfer the creamy yellow slurry to a vacuum distillation apparatus using 70 mL of distilled water to assist transfer. The vacuum distillation apparatus was equipped with a 1 L round bottom tank, a magnetic stirrer, a vacuum distillation head with a water-cooled condenser, and a 250 mL receiver. The 2-propanol and excess water were extracted from the reactant under a pressure of 100 mmHg until 250 mL of distillate was recovered. The materia...

Embodiment 2

[0036] Example 2: Dispersion of Oxybis(2,4-Pentanedionyl-O, O')Titanium Homopolymer in Water

[0037] A sample of the slurry prepared in Example 1 was weighed in a vial. A varying amount of dispersant was added to each bottle, the bottles were capped and the contents were shaken well. The bottles were then left undisturbed for 2 to 5 days, during which time the extent of deposition was determined. This measurement involves measuring the height of the upper liquid layer (if present) and dividing it by the total height of the sample to give a measure of sedimentation on a scale from 0 (no sedimentation) to approximately 0.55 (complete sedimentation). In addition, the bottle was swirled slowly to measure whether a firm layer of solids had formed on the bottom of the bottle.

[0038] Additives

Serum

Weight g

Additives

Weight g

deposition

time h

Sedimentation

Evaluation 1

lactic acid 2

15

0.04

96 ...

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PUM

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Abstract

A composition and method of making the composition are disclosed. The composition contains a titanium chelate polymer and a stabilizer. The method may comprise the steps of: (1) contacting tetraalkyl titanate with a chelating agent to obtain a mixed product containing titanium chelate and alcohol; (2) obtaining a titanium chelate polymer dispersion effectively (3) optionally reducing the alcohol content in the dispersion; and (4) contacting the dispersion with a stabilizing amount of a stabilizer to obtain a titanium chelate polymer stable dispersion.

Description

technical field [0001] The present invention relates to a composition and a method for its manufacture, wherein the composition contains a stable aqueous polymeric dispersion of titanium chelate. Background technique [0002] Polymers of chelated titanium orthoesters and water have many uses in industry. They are valuable in applications such as pigments, catalysts and surface modifiers. As used herein, the term "polymer" refers to both low molecular weight oligomers and high molecular weight polymers. [0003] Polymers obtained by reacting titanium chelates with water are typically solid materials, which makes them difficult to prepare and use without specialized processing equipment. For many applications, finished aqueous dispersions of such polymers will be preferred and are easier to manufacture and handle, but solid polymers generally precipitate out of water quickly. This causes stratification and settling of solids, which can be difficult to resuspend and distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/00C08G79/00
CPCC08G79/00
Inventor J·D·圣克莱尔T·W·德尔佩斯科
Owner DORF KETAL SPECIALITY CATALYSTS
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